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Finding the Fourth Proportional to 355,450.86, 533,208.96 and 102,728.16

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Solution

The fourth proportional to 355,450.86, 533,208.96 and 102,728.16 is: 154,101.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,450.86 : 533,208.96 = 102,728.16 : x
  2. Step 2: Convert to fraction form
    355,450.86/533,208.96 = 102,728.16/x
  3. Step 3: Cross multiply
    355,450.86x = 533,208.96 × 102,728.16
  4. Step 4: Simplify right side
    355,450.86x = 54,775,575,356.31
  5. Step 5: Solve for x
    x = 54,775,575,356.31/355,450.86
  6. Step 6: Final answer
    x = 154,101.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.